liter neces- 1. Calculate the minimum concentration of oxygen in milliliters sary to passivate iron in 3% Na,SO4; also for 12% Cr-Fe alloy. (D for O, at 25°C = 2 x 10°cm?/s) (Hint: Equate limiting diffusion current for reduction of oxygen to critical current density for passivity.) per

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1. Calculate the minimum concentration of oxygen in milliliters per liter neces-
sary to passivate iron in 3% Na,SO,; also for 12% Cr-Fe alloy. (D for O, at
25°C = 2 x 10cm?/s) (Hint: Equate limiting diffusion current for reduction
of
oxygen to critical current density for passivity.)
Transcribed Image Text:1. Calculate the minimum concentration of oxygen in milliliters per liter neces- sary to passivate iron in 3% Na,SO,; also for 12% Cr-Fe alloy. (D for O, at 25°C = 2 x 10cm?/s) (Hint: Equate limiting diffusion current for reduction of oxygen to critical current density for passivity.)
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